Battery device and electric equipment

Abstract

The utility model relates to a battery device and electric equipment. The battery device comprises a box body, a battery monomer and a heat exchange mechanism, the box body has an accommodating cavity; the battery monomers are arranged in the accommodating cavities; the heat exchange mechanism is arranged in the accommodating cavity and is in heat conduction connection with the battery monomers, the heat exchange mechanism comprises a heat exchange pipeline and a pressurizing structure arranged in the heat exchange pipeline, the pressurizing structure comprises a blocking piece and a pressurizing channel arranged on the blocking piece, and the pressurizing channel is configured to allow a heat exchange medium to flow; in the flowing direction of the heat exchange medium, the pressurizing channel comprises an input end and an output end, and the opening area of the input end is larger than that of the output end. The overall heat dissipation performance of the battery device can be improved, and the reliability of the battery device can be improved.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to battery devices and electrical equipment. Background Technology

[0002] Batteries are widely used in electronic devices such as mobile phones, laptops, electric vehicles, electric cars, electric airplanes, electric ships, electric toy cars, electric toy ships, electric toy airplanes, and power tools, etc.

[0003] Battery devices generate a lot of heat during use. They are usually equipped with cooling mechanisms to dissipate heat and reduce temperature. However, the heat exchange efficiency of existing cooling mechanisms is low, which affects the heat dissipation performance of the battery device. Summary of the Invention

[0004] In view of the above problems, this application provides a battery device and an electrical appliance, which aims to improve the heat dissipation performance of the battery device.

[0005] In a first aspect, this application proposes a battery device, including a housing, a battery cell, and a heat exchange mechanism; the housing has a receiving cavity; the battery cell is disposed in the receiving cavity; the heat exchange mechanism is disposed in the receiving cavity and is thermally connected to the battery cell, the heat exchange mechanism includes a heat exchange pipe and a pressurization structure disposed in the heat exchange pipe, the pressurization structure includes a barrier and a pressurization channel disposed in the barrier, the pressurization channel is configured to allow the heat exchange medium to flow; wherein, along the flow direction of the heat exchange medium, the pressurization channel includes an input end and an output end, the opening area of ​​the input end is larger than the opening area of ​​the output end.

[0006] In the embodiment of this application, the battery device includes a housing, individual battery cells, and a heat exchange mechanism. For the heat exchange medium that needs to flow through the heat exchange channel of the barrier, since the opening area at the input end is larger than the opening area at the output end, the flow rate and pressure of the heat exchange medium at the output end are both greater than those at the input end. By inputting the heat exchange medium at normal pressure, the effect of pressurizing the flow of the heat exchange medium can be achieved, thereby improving the heat exchange efficiency of the heat exchange medium. This can improve the heat exchange effect of the heat exchange mechanism at a specific location, thereby improving the overall heat dissipation performance of the battery device and the reliability of the battery device.

[0007] In some embodiments, there are multiple pressurization channels, which are distributed at intervals.

[0008] In these embodiments, providing multiple pressurization channels can improve the uniformity of pressurization of the heat exchange medium by the pressurization structure.

[0009] In some embodiments, the pressurization channels are of the same size.

[0010] In these embodiments, the shape and size of each pressurization channel are consistent, which facilitates mass production and molding.

[0011] In some embodiments, multiple pressurization channels are arranged in a circular pattern from the center of the barrier to form multiple concentric rings, or multiple pressurization channels are arranged in a rectangular array.

[0012] In these embodiments, the regularly arranged multiple pressurization channels facilitate mass production and improve the pressurization uniformity of the heat exchange medium by the pressurization structure.

[0013] In some embodiments, at least two pressurization channels are of different sizes.

[0014] In these embodiments, different pressurization channels are configured differently to achieve different pressurization and recirculation effects for different locations.

[0015] In some embodiments, multiple pressurization channels are arranged in a circular pattern from the center of the barrier to form multiple concentric rings; the pressurization channels within the same concentric ring have the same size, and / or the pressurization channels in adjacent concentric rings have different sizes.

[0016] In these embodiments, multiple pressurization channels are arranged in a regular pattern, and different pressurization channels are set differently, which facilitates batch preparation and molding, and also facilitates different pressurization and reflux effects at different positions.

[0017] In some embodiments, the internal dimensions of the pressurization channel gradually decrease from the input end to the output end.

[0018] In these embodiments, the cross-sectional area of ​​the inner wall of the pressurization channel at the output end is the smallest, and the cross-sectional area of ​​the inner wall of the pressurization channel at the input end is the largest, thereby making the opening area at the output end smaller than the opening area at the input end, and the processing technology of the pressurization channel is relatively simple.

[0019] In some embodiments, the barrier includes a barrier plate and a protrusion, the protrusion being located on the side of the barrier plate facing the output end, and a pressurization channel passing through the barrier plate and the protrusion.

[0020] In these embodiments, by providing protrusions, the pressurization channel can have a certain pressurization length while reducing the thickness of the barrier. Furthermore, the gaps around the protrusions also facilitate the formation of a reflux effect in the heat exchange medium.

[0021] In some embodiments, the cross-section of the pressurization channel perpendicular to the flow direction of the heat exchange medium is circular or rectangular.

[0022] In these embodiments, the pressure channel with a circular or rectangular cross-section is easy to prepare and shape, reducing the difficulty of the process.

[0023] Secondly, this application provides an electrical device including a battery device according to any of the first aspects of the above embodiments, the battery device being used to provide electrical energy.

[0024] The above description is only an overview of the technical solution of this application. In order to better understand the technical means of this application and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this application more obvious and understandable, the following are specific embodiments of this application. Attached Figure Description

[0025] The features, advantages, and technical effects of exemplary embodiments of this application will now be described with reference to the accompanying drawings.

[0026] Figure 1 This is a schematic diagram of the structure of a vehicle provided in one embodiment of this application;

[0027] Figure 2 This is a schematic diagram of the structure of a battery device provided in an embodiment of this application;

[0028] Figure 3 This is a schematic diagram of the structure of a battery module provided in one embodiment of this application;

[0029] Figure 4 This is a schematic diagram of the exploded structure of a single battery cell provided in an embodiment of this application;

[0030] Figure 5 This is a side view of the interior of a battery device provided in an embodiment of this application;

[0031] Figure 6 This is one of the partial three-dimensional structural schematic diagrams of the heat exchange pipe and pressurization structure in a battery device provided in an embodiment of this application;

[0032] Figure 7 yes Figure 6 A schematic diagram of the structure from the output end of the diagram;

[0033] Figure 8 This is a second partial three-dimensional structural schematic diagram of the heat exchange pipe and pressurization structure in a battery device provided in an embodiment of this application;

[0034] Figure 9 yes Figure 8 A schematic diagram of the structure from the input end viewpoint;

[0035] Figure 10 This is the third partial three-dimensional structural schematic diagram of the heat exchange pipe and pressurization structure in the battery device provided in one embodiment of this application;

[0036] Figure 11 yes Figure 10 A schematic diagram of the structure from the output end of the diagram;

[0037] Figure 12 This is the fourth partial three-dimensional structural schematic diagram of the heat exchange pipe and pressurization structure in the battery device provided in one embodiment of this application;

[0038] Figure 13 yes Figure 12 A schematic diagram of the structure from the input end viewpoint;

[0039] Figure 14 This is the fifth partial three-dimensional structural schematic diagram of the heat exchange pipe and pressurization structure in the battery device provided in one embodiment of this application;

[0040] Figure 15 yes Figure 14 The diagram shows the output end of the structure.

[0041] The accompanying drawings may not be drawn to scale.

[0042] Explanation of reference numerals in the attached figures:

[0043] 1000, vehicles;

[0044] 100. Battery assembly; 110. Controller; 120. Motor;

[0045] 200. Battery module;

[0046] 300. Box body; 30. Receiving cavity; 301. First box body; 302. Second box body;

[0047] 10. Battery cell; 11. Housing; 12. Electrode assembly; 13. End cap assembly;

[0048] 4. Heat exchange mechanism; 41. Heat exchange pipe; 42. Pressurization structure; 421. Barrier component; 421a. Barrier plate; 421b. Protrusion; 422. Pressurization channel; 422a. Input end; 422b. Output end. Detailed Implementation

[0049] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0050] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains; the terminology used in the description of this application is for the purpose of describing particular embodiments only and is not intended to limit the application; the terms "comprising" and "having," and any variations thereof, in the description, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. The terms "first," "second," etc., in the description, claims, or accompanying drawings of this application are used to distinguish different objects, not to describe a specific order or hierarchy.

[0051] In this application, the reference to "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment that is mutually exclusive with other embodiments.

[0052] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "attachment" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0053] In this application, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, in this application, the character " / " generally indicates that the preceding and following related objects have an "or" relationship.

[0054] In the embodiments of this application, the same reference numerals denote the same components, and for the sake of brevity, detailed descriptions of the same components are omitted in different embodiments. It should be understood that the thickness, length, width, and other dimensions of various components in the embodiments of this application shown in the accompanying drawings, as well as the overall thickness, length, width, and other dimensions of the integrated device, are merely illustrative and should not constitute any limitation on this application.

[0055] In this application, "multiple" means two or more (including two).

[0056] Currently, judging from market trends, the application of battery devices is becoming increasingly widespread. Battery devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in military equipment and aerospace. With the continuous expansion of battery device applications, market demand is also constantly increasing.

[0057] In related technologies, the cooling mechanism of a battery device involves placing a water-cooled plate at the bottom of the device, with pipes inside the plate for coolant to circulate. The flow of coolant within the plate gradually absorbs the heat generated by the battery, thus cooling the device. However, in current water-cooled plates, the pipes are continuously distributed within the plate. When the coolant absorbs a large amount of heat in the first half of the plate, the heat exchange effect deteriorates in the latter half, resulting in lower overall heat dissipation performance of the battery device.

[0058] More seriously, the poor heat exchange effect in the second half may lead to uneven heat dissipation between the first and second half of the battery device, and a larger temperature difference between the individual cells inside the battery device, which will have an adverse effect on the reliability of the battery device.

[0059] Based on the above problems, this application provides a battery device including a housing, battery cells, and a heat exchange mechanism. For the heat exchange medium that needs to flow through the heat exchange channel of the barrier, since the opening area at the input end is larger than the opening area at the output end, the flow rate and pressure of the heat exchange medium at the output end are both greater than those at the input end. By inputting the heat exchange medium at normal pressure, the effect of pressurizing the flow of the heat exchange medium can be achieved, thereby improving the heat exchange efficiency of the heat exchange medium. This can improve the heat exchange effect of the heat exchange mechanism at a specific location, thereby improving the overall heat dissipation performance of the battery device and the reliability of the battery device.

[0060] The technical solutions described in the embodiments of this application are applicable to battery devices and electrical equipment using battery devices.

[0061] Electrical equipment can include vehicles, mobile phones, portable devices, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be gasoline-powered cars, natural gas-powered cars, or new energy vehicles; new energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric car toys, electric ship toys, and electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. This application does not impose any special limitations on the above-mentioned electrical equipment.

[0062] The battery device mentioned in the embodiments of this application refers to a single physical module comprising one or more battery cells to provide higher voltage and capacity. For example, the battery device mentioned in this application may include a battery module or battery pack. A battery device generally includes a housing for encapsulating one or more battery cells. The housing can prevent liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0063] In some embodiments, the battery device can be used in an energy storage device. The energy storage device may include an energy storage container, an energy storage cabinet, etc., and the battery device is used to store or provide electrical energy.

[0064] It should be understood that the technical solutions described in the embodiments of this application are not limited to the battery devices and electrical equipment described above, but can also be applied to all battery devices including housings and electrical equipment using battery devices. However, for the sake of brevity, the following embodiments are all illustrated using electric vehicles as examples.

[0065] Please refer to Figure 1 , Figure 1 This is a schematic diagram of the structure of a vehicle provided in some embodiments of this application. The vehicle 1000 can be a gasoline-powered vehicle, a natural gas-powered vehicle, or a new energy vehicle. New energy vehicles can be pure electric vehicles, hybrid electric vehicles, or range-extended electric vehicles, etc. A battery device 100 is installed inside the vehicle 1000, and the battery device 100 can be located at the bottom, front, or rear of the vehicle 1000. The battery device 100 can be used to power the vehicle 1000; for example, the battery device 100 can serve as the operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 110 and a motor 120. The controller 110 is used to control the battery to supply power to the motor 120, for example, to meet the power needs of the vehicle 1000 during starting, navigation, and driving.

[0066] In some embodiments of this application, the battery device 100 can not only serve as the operating power source for the vehicle 1000, but also as the driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0067] Figure 2 A schematic diagram of the structure of a battery device according to an embodiment of this application is shown.

[0068] The battery device 100 mentioned in the embodiments of this application may include one or more battery cell assemblies for providing voltage and capacity. A battery cell assembly may include multiple battery cells 10, which are connected in series, parallel, or mixed connections via a busbar.

[0069] In some embodiments, the battery cell assembly is typically formed by arranging a plurality of battery cells 10.

[0070] As an example, the battery cell assembly can be a battery module 200, which is formed by arranging and fixing multiple battery cells 10 into a single module. As an example, the battery module 200 can be formed by bundling multiple battery cells 10 together with cable ties.

[0071] In some embodiments, the battery device 100 may be a battery pack, which includes a housing 300 and one or more battery cell assemblies housed in the housing 300.

[0072] As an example, the battery cell assembly can be a battery module 200, which can be housed in the housing 300 by fixing the battery module 200 in the housing 300.

[0073] As an example, the battery cell assembly can also be housed in the housing 300 by directly fixing multiple battery cells 10 to the housing 300.

[0074] As an example, the housing 300 may include a first housing 301 and a second housing 302. The first housing 301 and the second housing 302 are fastened together to form a closed space inside the housing 300 to house the battery cell assembly. Here, "closed" refers to covering or closing, and can be either sealed or unsealed. The first housing 301 may be a top cover or a bottom plate.

[0075] As an example, if the first housing 301 is located below the second housing 302, it can also be referred to as the lower housing, and the second housing 302 is referred to as the upper housing. The lower housing may include a bottom support plate, and the upper housing may include a top cover. The housing 300 also includes a frame connecting the bottom support plate and the top cover.

[0076] In some embodiments, the housing 300 may be part of the chassis structure of the vehicle 1000. For example, a portion of the housing 300 may be at least a portion of the floor of the vehicle 1000, or a portion of the housing 300 may be at least a portion of the crossbeams and longitudinal beams of the vehicle 1000.

[0077] Figure 3 A schematic diagram of the structure of a battery module according to an embodiment of this application is shown.

[0078] In some embodiments, such as Figure 2 and Figure 3 As shown, there are multiple battery cells 10. These multiple battery cells 10 are first connected in series, parallel, or in a mixed manner to form a battery module 200. The multiple battery modules 200 are then connected in series, parallel, or in a mixed manner to form a whole, which is housed in the casing 300.

[0079] Multiple battery cells 10 in the battery module 200 can be electrically connected through a busbar component to achieve parallel, series, or mixed connection of multiple battery cells 10 in the battery module 200.

[0080] In this application, the battery cell 10 may include lithium-ion battery cells, sodium-ion battery cells, or magnesium-ion battery cells, etc., and the embodiments of this application are not limited to this.

[0081] Figure 4 An exploded structural diagram of a battery cell according to an embodiment of this application is shown.

[0082] A battery cell 10 refers to the smallest unit that makes up a battery. A battery cell 10 includes a housing 11, an electrode assembly 12, and an end cap assembly 13.

[0083] Electrode assembly 12 is the component in the battery cell 10 where electrochemical reactions occur. The housing 11 may contain one or more electrode assemblies 12. The electrode assembly 12 is mainly formed by winding or stacking electrode sheets, which are divided into positive and negative electrode sheets, and a separator is usually provided between the positive and negative electrode sheets. The portions of the positive and negative electrode sheets containing active material constitute the electrode body, while the portions of the positive and negative electrode sheets without active material each constitute a tab. The positive and negative tabs can be located together at one end of the electrode body or separately at both ends of the electrode body. During the charging and discharging process of the battery cell, the positive and negative active materials react with the electrolyte, and the tabs connect to the electrode terminals to form a current loop.

[0084] As an example, the battery cell 10 can be a cylindrical battery cell, a prismatic battery cell, a pouch battery cell, or a battery cell of other shapes. Prismatic battery cells include prismatic battery cells, blade-shaped battery cells, and multi-prismatic batteries, such as hexagonal prismatic batteries. This application does not have any particular limitations.

[0085] The housing 11 and the end cap assembly 13 can be independent components. One or more openings can be provided on the housing 11, and one or more end cap assemblies 13 can close the openings to form the internal environment of the battery cell 10. Optionally, the end cap assembly 13 and the housing 11 can be integrated. Optionally, the end cap assembly 13 and the housing 11 can form a common connection surface before other components are inserted into the housing, and the end cap assembly 13 closes the housing 11 when it is necessary to encapsulate the interior of the housing 11.

[0086] In some embodiments, the end cap assembly 13 is provided with at least one electrode terminal, which is electrically connected to the electrode tab. The electrode terminal can be directly connected to the electrode tab or indirectly connected to the electrode tab through a current collector. In addition, the electrode terminal can be provided not only on the end cap assembly 13, but also on the housing 11.

[0087] Reference Figures 2 to 10 In a first aspect, this application proposes a battery device 100, which includes a housing 300, a battery cell 10, and a heat exchange mechanism 4. The housing 300 has a receiving cavity 30. The battery cell 10 is disposed in the receiving cavity 30. The heat exchange mechanism 4 is disposed in the receiving cavity 30 and is thermally connected to the battery cell 10. The heat exchange mechanism 4 includes a heat exchange pipe 41 and a pressurization structure 42 disposed in the heat exchange pipe 41. The pressurization structure 42 includes a barrier 421 and a pressurization channel 422 disposed in the barrier 421. The pressurization channel 422 is configured to allow the flow of a heat exchange medium. Along the flow direction of the heat exchange medium, the pressurization channel 422 includes an input end 422a and an output end 422b. The opening area of ​​the input end 422a is larger than the opening area of ​​the output end 422b.

[0088] The main function of the heat exchange mechanism 4 is to manage the heating and cooling of the battery device 100. It can remove the heat generated by the battery through heat conduction, heat convection, and heat radiation, ensuring that the battery operates within a suitable temperature range, thereby extending the battery's lifespan and improving its performance. This embodiment uses a liquid-cooled heat exchange mechanism 4 as an example. The liquid-cooled heat exchange mechanism 4 removes heat through the circulation of coolant within the heat exchange pipe 41. This heat exchange method has high heat dissipation efficiency and good temperature uniformity.

[0089] The heat exchange mechanism 4 is thermally connected to the battery cell 10. This can be understood as follows: the heat exchange mechanism 4 is partially directly attached to or abuts against the battery cell 10; or the heat exchange mechanism 4 and the battery cell 10 are spaced apart, and the heat exchange mechanism 4 is connected to the battery cell 10 through a thermally conductive medium, which can be air, metal, or thermally conductive adhesive, etc. The heat exchange pipe 41 stores and circulates the heat exchange medium, and the heat exchange mechanism 4 is mainly responsible for transferring heat from the battery cell 10 to the heat exchange medium. Optionally, the heat exchange mechanism 4 can have thermally conductive contact with the outer surface of the battery cell 10. For example, the heat exchange mechanism 4 may also include a heat exchange plate, which is connected to the heat exchange pipe 41 and thermally connected to the battery cell 10.

[0090] The baffle 421 is configured to block the flow of the heat exchange medium, and its edge can be connected to the inner wall of the heat exchange pipe 41. For example, the baffle plate 421a is arranged on the cross-section of the heat exchange pipe 41 such that the heat exchange medium must pass through the pressurization channel 422 to pass through the baffle plate 421a. The heat exchange medium enters the pressurization channel 422 from the inlet end 422a and exits from the outlet end 422b, thus improving the heat exchange efficiency of the heat exchange medium flowing through the pressurization channel 422.

[0091] In the embodiment of this application, the battery device 100 includes a housing 300, a battery cell 10, and a heat exchange mechanism 4. For the heat exchange medium that needs to flow through the heat exchange channel of the barrier 421, since the opening area of ​​the input end 422a is larger than the opening area of ​​the output end 422b, the flow rate and pressure of the heat exchange medium at the output end 422b are both greater than those at the input end 422a. By inputting the heat exchange medium at normal pressure, the effect of pressurizing the flow of the heat exchange medium can be achieved, thereby improving the heat exchange efficiency of the heat exchange medium. This can improve the heat exchange effect of the heat exchange mechanism 4 at a specific location, thereby improving the overall heat dissipation performance of the battery device 100 and the reliability of the battery device 100.

[0092] The specific location can be a heat exchange pipe 41 corresponding to the first or second half of the battery device 100. The number of pressurization structures 42 is not limited to one; they can be distributed at intervals throughout the entire heat exchange pipe 41. This improves the heat exchange efficiency of the heat exchange medium at the heat exchange pipe 41 where the pressurization structures 42 are located, thereby improving the overall heat dissipation effect of the battery device 100. For example, a pressurization structure 42 can be provided at the front end of the heat exchange pipe 41 corresponding to each heat exchange plate.

[0093] In addition, the pressurization method using the barrier 421 and pressurization channel 422, compared with the solution of setting up a booster pump or booster cylinder, does not require the additional setting of a control unit, saving equipment and energy costs. Moreover, the pressurization is carried out by directly changing the structural design within the heat exchange pipe 41, which is simpler in structure and has a reliable pressurization effect.

[0094] Optionally, the cross-sectional area of ​​the heat exchange pipe 41 at the output end 422b is the same as that at the input end 422a. After the heat exchange medium is discharged from the output end 422b, its flow velocity and pressure are different from those of other heat exchange media that are not directly facing the output end 422b on its circumferential side of the flow direction. Therefore, a backflow effect is formed, which is similar to a vortex state, thereby further improving the heat exchange efficiency of the heat exchange medium.

[0095] In some embodiments, there are multiple pressurization channels 422, which are distributed at intervals.

[0096] The multiple pressurization channels 422 can have the same or different shapes and sizes. For example, some pressurization channels 422 can have a circular cross-section, while others can have a square cross-section. The orientation of the output end 422b of each pressurization channel 422 can also be non-parallel to the axial direction of the heat exchange pipe 41, but can be intersected, so that the heat exchange medium can be output at different flow rates and directions, and form different reflux patterns.

[0097] The distribution of multiple pressurization channels 422 can be regular or irregular. The embodiments of this application mainly involve the arrangement of multiple pressurization channels 422 in a certain regular manner.

[0098] In these embodiments, providing multiple pressurization channels 422 can improve the pressurization uniformity of the heat exchange medium by the pressurization structure 42.

[0099] Reference Figures 6 to 11 In some embodiments, each pressurization channel 422 has the same size.

[0100] Each pressurizing channel 422 has the same dimensions. This can be understood as meaning that, in the same reference frame, any two pressurizing channels 422 have the same cross-sectional area or shape. For example, the opening area and shape of the input end 422a / output end 422b of the two pressurizing channels 422 are the same. For example, the orientation of the output end 422b of the two pressurizing channels 422 is the same, etc.

[0101] In these embodiments, the shape and size of each pressurization channel 422 are consistent, which facilitates mass production.

[0102] like Figure 7 As shown, in some embodiments, multiple pressurized channels 422 are arranged in a circular pattern outward from the center of the barrier 421 to form multiple concentric layers.

[0103] The pressurizing channel 422 within each layer is centered on the barrier 421. The number of pressurizing channels 422 in the outer layer can be greater than the number of pressurizing channels 422 in the inner layer. For example, from the inside out, the layers include a first layer, a second layer, a third layer, and a fourth layer. The first layer has one pressurizing channel 422, the second layer has six pressurizing channels 422, the third layer has twelve pressurizing channels 422, and the fourth layer has eighteen pressurizing channels 422.

[0104] Optionally, the cross-section of the heat exchange pipe 41 and the large surface of the barrier 421 can also be circular, which will better match the multiple layers formed by the circumferential arrangement of the pressurization channel 422.

[0105] In these embodiments, the multiple pressurization channels 422 arranged in a regular pattern facilitate mass production and improve the pressurization uniformity of the heat exchange medium by the pressurization structure 42.

[0106] like Figure 8 As shown, in some embodiments, multiple pressurization channels 422 are arranged in a rectangular array.

[0107] The arrangement of multiple pressurized channels 422 in a rectangular array means that one or more pressurized channels 422 are used as array units, and these units are replicated and arranged on the barrier member 421 according to a specified number of rows, columns, row spacing, and column spacing. These replicated pressurized channels 422 will form a rectangular grid pattern. Those skilled in the art can adapt the above array parameters according to the actual situation.

[0108] Optionally, the cross-section of the heat exchange pipe 41 and the large surface of the barrier 421 can also be rectangular, which is more compatible with the rectangular array arrangement of the pressurization channel 422.

[0109] In these embodiments, the multiple pressurization channels 422 arranged in a regular pattern facilitate mass production and improve the pressurization uniformity of the heat exchange medium by the pressurization structure 42.

[0110] Reference Figures 12 to 15 In some embodiments, at least two pressurization channels 422 are of different sizes.

[0111] The two pressurizing channels 422 have different dimensions, which can be understood as meaning that, in the same reference frame, at least one of the cross-sectional areas or shapes of the two pressurizing channels 422 is different. For example, the opening areas of the input end 422a / output end 422b of the two pressurizing channels 422 are different, or one is square while the other is circular. For example, the orientation of the output end 422b of the two pressurizing channels 422 is different, etc.

[0112] In these embodiments, different pressurization channels 422 are configured differently to achieve different pressurization and recirculation effects for different locations.

[0113] In some embodiments, a plurality of pressurizing channels 422 are arranged in a circular pattern from the center of the barrier 421 outward to form a plurality of concentric rings; the pressurizing channels 422 in the same concentric ring have the same size, and / or the pressurizing channels 422 in adjacent concentric rings have different sizes.

[0114] The pressurizing channel 422 within each layer is centered with the barrier 421. The number of pressurizing channels 422 in the outer layer can be greater than or equal to the number of pressurizing channels 422 in the inner layer. For example, from the inside out, the layers include a first layer, a second layer, a third layer, and a fourth layer. The first layer has one pressurizing channel 422, the second layer has four, the third layer has twelve, and the fourth layer has twelve. Optionally, the size of the pressurizing channel 422 in the second layer is larger than the size of the pressurizing channel 422 in the first layer. Optionally, the size of the pressurizing channel 422 in the second layer is the same as the size of the pressurizing channel 422 in the fourth layer. Optionally, the size of the pressurizing channel 422 in the first layer is the same as the size of the pressurizing channel 422 in the third layer.

[0115] Optionally, the cross-section of the heat exchange pipe 41 and the large surface of the barrier 421 can also be circular, which will better match the multiple layers formed by the circumferential arrangement of the pressurization channel 422.

[0116] In these embodiments, multiple pressurization channels 422 are arranged in a regular pattern, and different pressurization channels 422 are set differently, which facilitates batch preparation and molding, and also facilitates different pressurization and reflux effects at different positions.

[0117] In some embodiments, the internal dimensions of the pressurization channel 422 gradually decrease from the input terminal 422a to the output terminal 422b.

[0118] The internal dimensions of the pressurization channel 422 gradually decrease. This can be understood as the cross-sectional area enclosed by the inner wall of the pressurization channel 422 gradually decreasing from the input end 422a to the output end 422b.

[0119] In these embodiments, the cross-sectional area of ​​the inner wall of the pressurization channel 422 at the output end 422b is the smallest, and the cross-sectional area of ​​the inner wall of the pressurization channel 422 at the input end 422a is the largest, thereby making the opening area of ​​the output end 422b smaller than the opening area of ​​the input end 422a, and the processing technology of the pressurization channel 422 is relatively simple.

[0120] In some embodiments, the barrier 421 includes a barrier plate 421a and a protrusion 421b, the protrusion 421b being located on the side of the barrier plate 421a facing the output end 422b, and the pressurization channel 422 passing through the barrier plate 421a and the protrusion 421b.

[0121] The shape of the baffle plate 421a can be set to correspond to the cross-sectional shape of the heat exchange pipe 41 perpendicular to the flow direction of the heat exchange medium, so that the baffle plate 421a can effectively block the heat exchange medium from passing through, thereby improving the pressurization effect of the pressurization channel 422 on the heat exchange medium.

[0122] The edge of the baffle plate 421a is connected to the inner wall of the heat exchange pipe 41. The protrusion 421b protrudes from the baffle plate 421a in a direction away from the input end 422a. The input end 422a can be located on the side of the baffle plate 421a away from the protrusion 421b, and the output end 422b can be located at the end of the protrusion 421b away from the baffle plate 421a. The shape of the protrusion can be similar to the shape of the pressurization channel 422. Optionally, the protrusion 421b and the baffle plate 421a are integrally formed, which simplifies the connection between the two and provides good mechanical properties.

[0123] In these embodiments, by providing the protrusions 421b, the pressurization channel 422 can have a certain pressurization length while reducing the thickness of the barrier 421. Furthermore, the gaps around the protrusions 421b also facilitate the formation of a reflux effect in the heat exchange medium.

[0124] In some embodiments, the cross-section of the pressurization channel 422 perpendicular to the flow direction of the heat exchange medium is circular or rectangular.

[0125] In these embodiments, the pressure channel 422 with a circular or rectangular cross-section is easy to prepare and shape, reducing the difficulty of the process.

[0126] Secondly, embodiments of this application provide an electrical device including a battery device 100 according to any of the embodiments of the first aspect described above. The battery device 100 is used to provide electrical energy to the electrical device.

[0127] The electrical equipment can be any of the aforementioned devices or systems that utilize battery devices 100.

[0128] Please see Figures 1 to 15According to some embodiments of this application, this application provides a battery device 100, including a housing 300, a battery cell 10, and a heat exchange mechanism 4; the housing 300 has a receiving cavity 30; the battery cell 10 is disposed in the receiving cavity 30; the heat exchange mechanism 4 is disposed in the receiving cavity 30 and is thermally connected to the battery cell 10, the heat exchange mechanism 4 includes a heat exchange pipe 41 and a pressurizing structure 42 disposed within the heat exchange pipe 41, the pressurizing structure 42 includes a barrier 421 and a pressurizing channel 422 disposed in the barrier 421, the pressurizing channel 422 is configured to allow the flow of a heat exchange medium; wherein, along the flow direction of the heat exchange medium, the pressurizing channel 422 includes an input end 422a and an output end 422b, the opening area of ​​the input end 422a is larger than the opening area of ​​the output end 422b. There are multiple pressurizing channels 422, which are spaced apart. From the input end 422a to the output end 422b, the internal dimensions of the pressurizing channel 422 gradually decrease. The barrier 421 includes a barrier plate 421a and a protrusion 421b. The protrusion 421b is located on the side of the barrier plate 421a facing the output end 422b. The pressurization channel 422 passes through the barrier plate 421a and the protrusion 421b.

[0129] Although this application has been described with reference to preferred embodiments, various modifications can be made thereto and components can be replaced with equivalents without departing from the scope of this application. In particular, the technical features mentioned in the various embodiments can be combined in any manner, provided there is no structural conflict. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A battery device, characterized in that, include: The box-shaped enclosure has a receiving cavity; A single battery cell is disposed in the receiving cavity; A heat exchange mechanism is disposed in the receiving cavity and thermally connected to the battery cell. The heat exchange mechanism includes a heat exchange pipe and a pressurization structure disposed in the heat exchange pipe. The pressurization structure includes a barrier and a pressurization channel disposed in the barrier. The pressurization channel is configured to allow the heat exchange medium to flow. Along the flow direction of the heat exchange medium, the pressurization channel includes an input end and an output end, and the opening area of ​​the input end is larger than the opening area of ​​the output end.

2. The battery device according to claim 1, characterized in that, The number of pressurization channels is multiple, and the multiple pressurization channels are distributed at intervals.

3. The battery device according to claim 2, characterized in that, All of the pressurization channels are the same size.

4. The battery device according to claim 3, characterized in that, The multiple pressurizing channels are arranged in a circular pattern from the center of the barrier to form multiple concentric layers, or the multiple pressurizing channels are arranged in a rectangular array.

5. The battery device according to claim 2, characterized in that, At least two of the pressurization channels are of different sizes.

6. The battery device according to claim 5, characterized in that, Multiple pressurization channels are arranged in a circular pattern from the center of the barrier outward to form multiple concentric layers; The pressurization channels within the same concentric circle are of the same size, and / or the pressurization channels in adjacent concentric circles are of different sizes.

7. The battery device according to any one of claims 1 to 6, characterized in that, The internal dimensions of the pressurization channel gradually decrease from the input end to the output end.

8. The battery device according to any one of claims 1 to 6, characterized in that, The barrier includes a barrier plate and a protrusion, the protrusion being located on the side of the barrier plate facing the output end, and the pressurization channel passing through the barrier plate and the protrusion.

9. The battery device according to any one of claims 1 to 6, characterized in that, The pressurization channel has a circular or rectangular cross-section perpendicular to the flow direction of the heat exchange medium.

10. An electrical appliance, characterized in that, The battery device includes any one of claims 1 to 9, the battery device being used to provide electrical energy.

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